VESDA by Xtralis
VESDA VLC-400 Product Guide
www.xtralis.com
37
10 Troubleshooting
10.1 Interrogating fault conditions
The fault status of the VESDA VLC-400 is reported in summary form to the FACP and may also be directly
interrogated use a PC running the Xtralis VSC application.
10.1.1 Faults reported to the FACP
A small number of summary faults may be reported to the FACP using the analog values in the range 0 to 7
inclusive, providing the analog smoke value is <45. Some FACP’s are able to display this value as part of their
normal device display. The fault numbers displayed this way have the following meaning.
Value sent to
FACP
VLC-400 Fault
Fault Number(s)
Priority
0
Default Configuration Values 81
7
1
Default Head Calibration
37
6
2
Normalizing
77
7
3
Not Assigned – Reserved
Not used
-
4
Laser Low
23
2
5
Filter Fault
4,11, 73, 76
4
6
Flow Fault
22, 51, 52, 53, 54, 74
3
7
Any Other Fault
All other faults
1
Table 10-1: VESDA VLC-400 Fault Level and Values
These fault levels are prioritized with level 7 having the highest priority.
Note:
If an alarm condition occurs then this has priority over fault reporting.
10.1.2 Faults list
A more comprehensive list of faults is available via the PC connector port using a PC running Xtralis VSC.
The table below lists the VESDA VLC-400 applicable faults by fault number, description, possible cause,
action to rectify and the fault classification (either urgent or minor).
All faults that occur are classified as either an urgent fault or a minor fault. The following table lists the urgent
and minor faults as applicable to the VESDA VLC-400 detector.
Fault No.
Description
Cause
Action
Fault Classification
0
Aspirator failed
The aspirator has failed
or is not functioning
correctly.
Check the cable. If OK,
contact your local Xtralis
representative for a
replacement aspirator.
Urgent
2
Apollo loop
communications
problem.
VLC-400 Apollo Loop
communications have
failed. Possibly due to
problems on Apollo
Loop. Note that fault will
be raised when Xtralis
VSC is connected.
Disconnect Xtralis VSC.
If the event is observed
in the event log whilst
Xtralis VSC was not
connected then
investigate why the
Apollo Loop comms
may have failed.
Urgent
3
Detector failure
Detector Processor
board has a hardware
failure
Contact your authorized
Xtralis representative for
a replacement detector.
Urgent
Table 10-2: VLC-400 Applicable Faults and Classification List
